Files
linux/rust/helpers/dma.c
Beata Michalska c71257394b rust: dma: allow drivers to tune max segment size
Make dma_set_max_seg_size() available to Rust so drivers can perform
standard DMA setup steps.

Signed-off-by: Beata Michalska <beata.michalska@arm.com>
Acked-by: Robin Murphy <robvin.murphy@arm.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260128135320.689046-1-beata.michalska@arm.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-01-28 16:53:24 +01:00

52 lines
1.3 KiB
C

// SPDX-License-Identifier: GPL-2.0
#include <linux/dma-mapping.h>
__rust_helper void *rust_helper_dma_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *dma_handle,
gfp_t flag, unsigned long attrs)
{
return dma_alloc_attrs(dev, size, dma_handle, flag, attrs);
}
__rust_helper void rust_helper_dma_free_attrs(struct device *dev, size_t size,
void *cpu_addr,
dma_addr_t dma_handle,
unsigned long attrs)
{
dma_free_attrs(dev, size, cpu_addr, dma_handle, attrs);
}
__rust_helper int rust_helper_dma_set_mask_and_coherent(struct device *dev,
u64 mask)
{
return dma_set_mask_and_coherent(dev, mask);
}
int rust_helper_dma_set_mask(struct device *dev, u64 mask)
{
return dma_set_mask(dev, mask);
}
int rust_helper_dma_set_coherent_mask(struct device *dev, u64 mask)
{
return dma_set_coherent_mask(dev, mask);
}
int rust_helper_dma_map_sgtable(struct device *dev, struct sg_table *sgt,
enum dma_data_direction dir, unsigned long attrs)
{
return dma_map_sgtable(dev, sgt, dir, attrs);
}
size_t rust_helper_dma_max_mapping_size(struct device *dev)
{
return dma_max_mapping_size(dev);
}
__rust_helper void rust_helper_dma_set_max_seg_size(struct device *dev,
unsigned int size)
{
dma_set_max_seg_size(dev, size);
}